Hypothetically, a large cruise ship running on biofuel, with a maximized hull shape and air lubrication, waste heat recovery, and speed and route optimization could be very energy efficient and consequently emit less CO2, according to research compiled by Evert A. Bouman, researcher in the Department of Energy and Process Engineering at the Norwegian University of Science and Technology.

“The big thing for us is two Signature-class ships in Alaska this summer,” said Dirk van der Raadt, senior manager deployment and itinerary planning at Holland America Line, in an interview with Cruise Industry News.

“We are embarking on a strategy of providing our customers with a portfolio of luxury experiences,” said Thomas Mazloum, COO at Crystal Cruises, in an exclusive interview with Cruise Industry News. With its two classic oceangoing ships being the core of its business, the company has over the past couple of years introduced river cruises, yacht cruises and exclusive air travel.